SHEN Pengfei, QIN Zipeng, TIAN Yan, LI Gang, LUO Chengyan
（College of Water Conservancy and Architecture Engineering Shihezi University, Shihezi 832000, Xinjiang, China)

Abstract: In order to study the effect of basalt fiber content on the properties of fly ash foam glass, foam glass was prepared using fly ash, glass powder, basalt fiber and additives. The influence of different basalt fiber content on fly ash foam glass’s physical properties, mechanical properties as well as thermal conductivity was studied. The results show that with the increase of basalt fiber content, there is an increasing tendency in both the apparent density and the heat conductivity of the fly ash foam glass; when the basalt fiber content is 3-4‰, the apparent density changes more gently; when the basalt fiber content is 1‰, the thermal conductivity reaches 0.0631 W/(m•K); when the basalt fiber content is 1-5‰, the impact on the moisture content and moisture absorption rate of the fly ash foam glass is not obvious, with them both maintained at about 0.35% and 15% respectively. When the basalt fiber content is 1-4‰, the compressive strength and the flexural strength of the fly ash foam glass increase gradually. When the basalt fiber content is 4‰, the compressive strength and the flexural strength are 8.28 MPa and 0.75 MPa respectively, increased by 2.24 and 1.92 times compared with those of the benchmark specimen.

Key words: basalt fiber; foam glass; mechanical property; heat conductivity coefficient